Means for sealing storage-battery covers in cells



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Patented Jan. 20, 1920 UNITED STATES PATENT OFFICE.

FRED BARHOFF. OF T-IARTF ORD, CONNECTICUT. ASSIGNOR I'D THE HARTFORD STORAGE BATTERY MANUFACTURING COMPANY, OF HARTFORD, CONNECTI- CUT, A CORPORATIONOF CONNECTICUT.

MEANS FOR SEALING STORAGE-BATTERY COVERS IN CELLS.

To all whom it may concern Be it known that I, FRED XV. Bamiorr,

a citizen of the United States, residing at Hartford, in the county of Hartford and State of Connecticut, have invented a new and useful Improvement in Means for Sealing Storage-Battery"Covers in Cells, of which the following is .a specification.

The covers of storage battery cells are necessarily, in order to prevent the electrolyte from escaping, sealed in the jars. This invention relates to means for effecting such sealing of the covers in the jars of storage batteries. This sealing is customarily accomplished by either flooding the top of the cell or filling a channel around the edge of the cover with a melted insulating compound. In order to remove such material when the battery is to be taken down for cleaning or repairs, it is necessary to dig out or melt and pour out the hardened compound.

The object of this invention is to provide means whereby the covers of storage battery cells may be very quickly, tightly and durably sealed in the jars in such manner that the electrolyte cannot escape, Without the employment of a sealing compound, and thereby permitting the removal of the covers,

when it is desired to open the cells, without the application of heat.

This object is attained b locating a rubber or similar tube or pac ring in a groove formed around the outer edge of the cover and providing means whereby the tube may be inflated with fluid so that itwill expand outward and pack the joint between the inner Wall of the jar and the edge of the cover.

In the accompanying drawings Figure 1 spring closed va vs 13, and cap Specification of Letters Patent. Patented Jan. 2t}, 192 Application filed April 7, 1919.

Serial No. 288,097.

with a common form of nipple 12 having an inwardly opening and an outwardly seating 14 screwed on its outer end.

WVhen it is desired to seal in the jar a cover valve and allowing the fluid in the tube to escape.

The invention claimed is 1. The combination with a storage battery jar of a cover fitting the jar, said cover having a groove in its outer ed e, a flexible tube located in said groove, anc means whereby said tube may be inflated with fluid.

2. The combination with a storage battery 'ar of a cover fittin the 'ar said cover hav- 1 ing a semi-circular groove in its outer edge, an antight rubber tube located in said groove, and a valve nipple connected with the tube and providing means whereby the" tube may be inflated wit air.

3. The combination with a storage battery a jar of a cover fitting the jar, said cover having a groove in its outer edge, a flexible pact;-- ing arranged in said groove, and means whereby fluid may be forced back of said )ackin for ex andin the ackin in the l h a a groove against the inner wall of the 4. The method of sealing a cover in. a

storage battery jar which consists of forming a groove around the edge of the cover,

locatin a tube in said groove and inflating said tu e with fluid and expanding it out- Ward of the groove against the inner. Wall of the jar.

5. The method of sealing a cover in a storage battery jar which consists in providing the perimeter of the cover with a flexible tube and inflating said tube and causing 10 it to expand between the outer edge of the cover and the inner Wall of the jar.

FRED W. BARHOFF. 

